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Finding the Fourth Proportional to 328,338.39, 492,507.68 and 79,020.39

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Solution

The fourth proportional to 328,338.39, 492,507.68 and 79,020.39 is: 118,530.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,338.39 : 492,507.68 = 79,020.39 : x
  2. Step 2: Convert to fraction form
    328,338.39/492,507.68 = 79,020.39/x
  3. Step 3: Cross multiply
    328,338.39x = 492,507.68 × 79,020.39
  4. Step 4: Simplify right side
    328,338.39x = 38,918,148,556.49
  5. Step 5: Solve for x
    x = 38,918,148,556.49/328,338.39
  6. Step 6: Final answer
    x = 118,530.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.